Catalyzes the phosphorylation of sphingosine to form sphingosine 1-phosphate (SPP), a lipid mediator with both intra- and extracellular functions. Also acts on D-erythro-sphingosine and to a lesser extent sphinganine, but not other lipids, such as D,L-threo-dihydrosphingosine, N,N-dimethylsphingosine, diacylglycerol, ceramide, or phosphatidylinositol . In contrast to proapoptotic SPHK2, has a negative effect on intracellular ceramide levels, enhances cell growth and inhibits apoptosis . Involved in the regulation of inflammatory response and neuroinflammation. Via the product sphingosine 1-phosphate, stimulates TRAF2 E3 ubiquitin ligase activity, and promotes activation of NF-kappa-B in response to TNF signaling leading to IL17 secretion . In response to TNF and in parallel to NF-kappa-B activation, negatively regulates RANTES induction through p38 MAPK signaling pathway . Involved in endocytic membrane trafficking induced by sphingosine, recruited to dilate endosomes, also plays a role on later stages of endosomal maturation and membrane fusion independently of its kinase activity . In Purkinje cells, seems to be also involved in the regulation of autophagosome-lysosome fusion upon VEGFA . .; Has serine acetyltransferase activity on PTGS2/COX2 in an acetyl-CoA dependent manner. The acetyltransferase activity increases in presence of the kinase substrate, sphingosine. During neuroinflammation, through PTGS2 acetylation, promotes neuronal secretion of specialized preresolving mediators (SPMs), especially 15-R-lipoxin A4, which results in an increase of phagocytic microglia. .

q9nya1

Sphingosine kinase 1 (SK 1) (SPK 1) (EC 2.7.1.91) (Acetyltransferase SPHK1) (EC 2.3.1.-),SPHK1 SK1 SPHK SPK,SPHK,SK 1,SPK,Acetyltransferase SPHK1,Sphingosine kinase 1,SPHK1,SPK 1,SK1

Human, Mouse

WB,IHC,ELISA

WB 1:500-1:2000
IHC 1:50-1:300
ELISA 1:5000-1:20000

43kD

Rabbit

Recombinant Human SPHK1 (Ser148-Leu384).

Polyclonal

IgG

Purified by antigen affinity column.

0.01M PBS, pH 7.4, 50% Glycerol, 0.05% Proclin 300.

Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Store at 4℃ short term (1-2 weeks). Store at -20℃ 12 months.